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| author | Akinobu Mita <akinobu.mita@gmail.com> | 2008-07-14 11:59:15 +0400 |
|---|---|---|
| committer | Heiko Carstens <heiko.carstens@de.ibm.com> | 2008-07-14 12:02:15 +0400 |
| commit | d9cef21af03eb56473db5bb20d8754f377a498e7 (patch) | |
| tree | 6d4fde0ab8bbd16d4e12fdc95e9570fe957af5bf /drivers/s390/cio/chp.c | |
| parent | 7785857a5a4f3e2093ced12568744a205e164d59 (diff) | |
| download | linux-d9cef21af03eb56473db5bb20d8754f377a498e7.tar.xz | |
[S390] s390/cio: use memory_read_from_buffer()
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio/chp.c')
| -rw-r--r-- | drivers/s390/cio/chp.c | 11 |
1 files changed, 2 insertions, 9 deletions
diff --git a/drivers/s390/cio/chp.c b/drivers/s390/cio/chp.c index 8644c80a2056..d58dc9f15b72 100644 --- a/drivers/s390/cio/chp.c +++ b/drivers/s390/cio/chp.c @@ -143,21 +143,14 @@ static ssize_t chp_measurement_chars_read(struct kobject *kobj, { struct channel_path *chp; struct device *device; - unsigned int size; device = container_of(kobj, struct device, kobj); chp = to_channelpath(device); if (!chp->cmg_chars) return 0; - size = sizeof(struct cmg_chars); - - if (off > size) - return 0; - if (off + count > size) - count = size - off; - memcpy(buf, chp->cmg_chars + off, count); - return count; + return memory_read_from_buffer(buf, count, &off, + chp->cmg_chars, sizeof(struct cmg_chars)); } static struct bin_attribute chp_measurement_chars_attr = { |